Fix : clang-10 issue for Networkd

- Added `AfterCaseLabel: true` clang rule so that
  the clang-format check does not fail in version 10.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: Id19ba9afe9ae74847c98e2cf84e924d8dd671164
diff --git a/.clang-format b/.clang-format
index 8c5278e..60ceb3c 100644
--- a/.clang-format
+++ b/.clang-format
@@ -21,6 +21,7 @@
 BinPackArguments: true
 BinPackParameters: true
 BraceWrapping:
+  AfterCaseLabel:  true
   AfterClass:      true
   AfterControlStatement: true
   AfterEnum:       true